boot - Make my Old Hard Drive Not Bootable

Frequently my bios for some reason tries to boot to my old HDD instead of my new SSD. This is starting to get very annoying have to switch HDD priorities every time I restart my computer.

Disk 0 (Storage E:) is my old harddrive with has grub bootloader on it. I want to make that hard drive NOT bootable WITHOUT losing any data on it. Is this possible? Please help!

Answer

Your Disk 0 partition 1 (Storage E:) is still has the Active flag enabled.. This is the cause of the problem. You have to remove the active flag from that partition as follows:

1. Open up cmd as administrator.


2. Type diskpart and hit enter



3. Type list disk and enter


4. Type select disk 0 and enter


5. Type list partition and enter


6. Type select partition 1 and enter


7. Type inactive and enter


8. Type exit